Growth and yield of potatoes cultivated in different planting methods under greenhouse and open field conditions

Potato farming is ranked fourth in terms of global production. However, climatic variations affect crop planning, which decreases yield. As such, new cultivation techniques have been adopted to mitigate these effects and need investigation. This study aimed to assess the growth and yield of potato plants cultivated using different planting methods under greenhouse and open field conditions. The study design was completely randomized, with four treatments arranged in a 2 x 2 factorial scheme. The first factor was growing conditions (greenhouse or open field), and the second was the planting method (in bags or directly in the soil). Soil planting in a greenhouse produced the highest root, stem, leaf, tuber, and total dry and fresh weight values. These conditions also accumulated more growing degree days (2392 degrees C) than plants in the open field (1774 degrees C). The largest leaf areas (4389 cm2) were recorded in plants sown directly in the soil in the greenhouse when compared to the average of the other treatments (2078 cm2), and peaked at 113 days after planting (DAP), whereas maximum values in the open field were reached at 92 DAP. No significant differences were observed between potato plants for total chlorophyll content, with an average of 44.4 SPAD units. The greenhouse treatments showed higher stomatal conductance (gs) (451.7 mmol m-2 s-1) than those in the open field (221 mmol m-2 s-1).